Blast, an Ethereum Layer-2 solution, has been subject to criticism concerning its security and operational aspects. Polygon developer Jarrod Watts expressed concerns about Blast's permanent upgradable security contract, managed by a 3/5 multi-sig authorization model, potentially putting user assets at risk. Watts also doubted Blast's qualifications as an L2 solution, pointing out the absence of features like testnet, transactions, bridge, and roll-up. In response, Blast's team defended their security model, emphasizing its necessity for addressing potential bugs and ensuring the platform's integrity. They reassured users of the robustness of their multi-sig model, explaining that all keys are securely kept in cold storage by individuals in different geographic locations
